H1N1 vaccination

A child is restrained as he receives a nasal spray during a vaccination clinic held by Montgomery County Health and Human Services for the H1N1 virus on October 9 at the Dennis Avenue County Health Center in Silver Spring, Maryland. (Photo by Tim Sloan/AFP/Getty Images)

A child is restrained as he receives a nasal spray during a vaccination clinic held by Montgomery County Health and Human Services for the H1N1 virus on October 9 at the Dennis Avenue County Health Center in Silver Spring, Maryland. (Photo by Tim Sloan/AFP/Getty Images)

A child is restrained as he receives a nasal spray during a vaccination clinic held by Montgomery County Health and Human Services for the H1N1 virus on October 9 at the Dennis Avenue County Health Center in Silver Spring, Maryland. (Photo by Tim Sloan/AFP/Getty Images)